Departments and specialties

Mayo Clinic has one of the largest and most experienced practices in the United States, with campuses in Arizona, Florida and Minnesota. Staff skilled in dozens of specialties work together to ensure quality care and successful recovery.

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Displaying 1-10 out of 11 doctors available

  1. Alex G. Boutselis, M.D.

    Alex G. Boutselis, M.D.

    1. Radiologist
    1. Phoenix, AZ
    Areas of focus:

    Emergency care, Abdominal CT scan, Trauma care, Thyroid scan, X-ray, MRI, CT scan, Ultrasound, Nuclear medicine scan, B...one scan, Positron emission tomography scan, Focused ultrasound, Abdominal ultrasound, CT angiogram, Brain MRI , Chest x-ray, Brain CT scan, Doppler ultrasound, Stroke, Traumatic brain injury, Thyroid disease, Pneumothorax, Pulmonary embolism, Pneumonia, Diverticulitis, Gastrointestinal bleeding, Small bowel obstruction, Appendicitis, Infection, Pelvis fracture, Spinal compression fracture, Traumatic injury, Gastrointestinal perforation, Bone metastasis, Pediatric trauma, Pathologic fracture, Intracranial hemorrhage, Head trauma, Cancer treatment related morbidity, Metastatic spinal cord compression, Abdominal wall injury, Abdominal injury, Chest injury, Traumatic spine injury

  2. Justin Cramer, M.D.

    Justin Cramer, M.D.

    1. Radiologist
    1. Phoenix, AZ
    Areas of focus:

    MRI, CT scan, Lumbar puncture, Myelogram, CT brain perfusion, CT angiogram, Brain MRI , CT-guided aspiration, CT-guided... biopsy, Perfusion MRI, Brain CT scan

  3. David R. DeLone, M.D.

    David R. DeLone, M.D.

    1. Radiologist
    1. Rochester, MN
    Areas of focus:

    MRI, CT scan, Brain MRI , Brain CT scan

  4. Joseph M. Hoxworth, M.D.

    Joseph M. Hoxworth, M.D.

    1. Radiologist
    1. Phoenix, AZ
    Areas of focus:

    MRI, CT scan, Lumbar puncture, Myelogram, Brain MRI , CT-guided aspiration, CT-guided biopsy, Brain CT scan

  5. Leland S. Hu, M.D.

    Leland S. Hu, M.D.

    1. Radiologist
    1. Phoenix, AZ
    Areas of focus:

    Brain MRI , Spine MRI, Brain CT scan, Meningioma, Acoustic neuroma, Pituitary tumor, Chordoma, Brain tumor, Brain metas...tasis, Glioblastoma, Astrocytoma, Oligodendroglioma, Neurofibromatosis, Glioma, Ependymoma, Neurofibroma, Plexiform neurofibroma, Choroid plexus papilloma

  6. Timothy J. Kaufmann, M.D., M.S.
    Areas of focus:

    Brain MRI , Brain CT scan, High-intensity focused ultrasound

  7. Nick A. Koontz, M.D.

    Nick A. Koontz, M.D.

    1. Neuroradiologist
    1. Phoenix, AZ
    Areas of focus:

    Cisternogram, X-ray, MRI, CT scan, Lumbar puncture, Imaging procedure, Myelogram, Epidural blood patch, Lumbar discogra...phy, CT brain perfusion, CT angiogram, Brain MRI , Epidural fibrin glue patch, CT-guided aspiration, Epidural steroid injection, CT-guided biopsy, MR myelogram, Brain CT scan, Fluoroscopy-guided biopsy, Biopsy, MRI of cochlear implant, Neck pain, Trigeminal neuralgia, CSF leak, CSF-venous fistula

  8. Nick G. Matthees, M.D.

    Nick G. Matthees, M.D.

    1. Neuroradiologist
    1. Phoenix, AZ
    Areas of focus:

    MRI, CT scan, Lumbar puncture, Myelogram, CT angiogram, Brain MRI , CT-guided biopsy, Brain CT scan, CSF leak

  9. Tanya J. Rath, M.D.

    Tanya J. Rath, M.D.

    1. Radiologist
    1. Phoenix, AZ
    Areas of focus:

    MRI, CT scan, Lumbar puncture, Myelogram, Brain MRI , CT-guided aspiration, CT-guided biopsy, Brain CT scan

  10. Kalen J. Riley, M.D., M.B.A.

    Kalen J. Riley, M.D., M.B.A.

    1. Radiologist
    1. Phoenix, AZ
    Areas of focus:

    MRI, CT scan, Lumbar puncture, Myelogram, CT brain perfusion, CT angiogram, Brain MRI , Perfusion MRI, Brain CT scan

Research

Radiologists and scientists trained in brain CT scans and other imaging methods study how to best use brain CT to predict and diagnose a wide range of diseases and conditions.

Publications

See a list of publications about brain CT scans by Mayo Clinic doctors on PubMed, a service of the National Library of Medicine.

Research Profiles

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View all physicians • Florida

Aug. 26, 2025
  1. Winn HR, ed. Computer tomography and magnetic resonance imaging of the brain. In: Youmans and Winn Neurological Surgery. 8th ed. Elsevier; 2023. https://www.clinicalkey.com. Accessed June 13, 2025.
  2. Ropper AH, et al. Diagnostic testing in neurological disease. In: Adams and Victor's Principles of Neurology. 12th ed. McGraw Hill; 2023. https://accessmedicine.mhmedical.com. Accessed June 13, 2025.
  3. Kular S, et al. A primer in interpretation of head CT scans. British Journal of Hospital Medicine. 2019; doi:10.12968/hmed.2019.80.11.C156.
  4. Panicker S, et al. CT imaging computed tomography/computed tomography angiography/perfusion in acute ischemic stroke and vasospasm. Neuroimaging Clinics of North America. 2024; doi:10.1016/j.nic.2024.01.004.
  5. Bos D, et al. Radiation exposure in computed tomography. Deutsches Ärzteblatt International. 2023; doi:10.3238/arztebl.m2022.0395.
  6. McCollough CH, et al. Answers to common questions about the use and safety of CT scans. Mayo Clinic Proceedings. 2015; doi:10.1016/j.mayocp.2015.07.011.
  7. Kantro M, et al. New imaging techniques and trends in radiology. Diagnostic and Interventional Radiology. 2024; doi:10.4274/dir.2024.242926.
  8. Radiation dose. RadiologyInfo.org. https://www.radiologyinfo.org/en/info/safety-xray. Accessed June 13, 2025.
  9. Andreas A, et al., eds. Current status of imaging of the brain and anatomical features. In: Grainger & Allison's Diagnostic Radiology: A Textbook of Medical Imaging. 7th ed. Elsevier; 2021. https://www.clinicalkey.com. Accessed June 13, 2025.
  10. Health Education & Content Services. About your CT scan. Mayo Clinic; 2015.
  11. Body CT. RadiologyInfo.org. https://www.radiologyinfo.org/en/info/bodyct. Accessed June 13, 2025.
  12. Head CT. RadiologyInfo.org. https://www.radiologyinfo.org/en/info/headct. Accessed June 20, 2025.